Control method of root rot nematode disease

Helicobium nematophila is a small nematode that exists in the soil. It mainly damages the roots and other underground organs of the host plant. Occasionally, it infiltrates the shoots, such as stems, fruits, etc., and the tissue of the infected site turns dark brown and is immersed in water. There are scars on the surface, and the roots are short and rot. The aboveground parts show dwarf growth, withering, or death. In terms of prevention and control, proper application of nitrogenous fertilizers, especially urea, can inhibit the occurrence of shortworms. Choose healthy and insect-free propagation materials, and select appropriate temperature and time combinations according to the sensitivity of different propagation materials to temperature, and conduct hot water treatment on the propagation materials. The soil is treated with mustard-killing and other fumigant killing agents before planting. After planting, non-fumigated killing agents such as pyrethroids, chlorhexidine, mirerol, and phorate may be used for prevention and treatment.

Laser Distance Meter

Laser distance measure is a very convenient tool for various types of applications in industries, construction and house decoration. Laser distance meter is a very useful device which gives accurate measurement of distance, area and volume especially in large areas such as rooms, apartments, buildings, real estates, factories, warehouses, infrastructures, gardens, roads, and many other applications requiring accurate results for distance , area and volume measurement.

Trade your heavy tape measure for laser rangefinder, which let you simply take measurements with one hand. No matter your job, the laser rangefinder will help you measure much farther, with greater accuracy and in more situations, saving you money and time.

Specification:

Product Model:

JX40

Accuracy:

±1.5mm (0.06 inch)

Measuring Unit:

metre/inch/feet

Measuring Range:

0.03~40m (0.01 to 131 ft)

Measuring Time:

0.1~4 seconds

Laser Class:

Class II

Laser Type:

635nm, <1mW

Waterproof & Dustproof :

IP54

Auto Laser Off:

60 seconds

Automatic Power-off:

480 seconds(8 minutes)

Lighting:

white LED

Datum Option:

Can choose Front edge or end piece edge as datum

Battery Status:

Y

Signal Strength Display:

Y

LCD display:

2 inch large screen

Display illumination and multi-line display:

Max 2 displays

Data Memory:

Y (allow 20 values)

Backlight display:

Y

Continuous Measurement:

Y

Min/max Measurement:

Y

Addition/Subtraction(Distance/Area/Volume):

Y

Area/Volume/Pythagoras Measurement:

Y

Battery Type:

AAA alkaline battery(2*1.5v )

Weight:

about 80g

Dimensions(L*W*H):

4*2*11.5cm

Auto correction and error report technology:

Y

Operating Temperature:

0-40 ℃(32-104 ℉ )

Storage Temperature:

-20~60 ℃ (-4~140 ℉)

Laser Distance Meter,Laser Distance Measure,Laser Rangefinder,Laser Distance Gauge

Chengdu JRT Meter Technology Co., Ltd , https://www.irdistancesensor.com